package com.nkdx.ws.util;

import org.apache.commons.lang3.StringUtils;
import org.springframework.util.DigestUtils;

import javax.servlet.http.HttpServletRequest;

/**
 *
 *  工具类
 * @author ZZW
 * @date 2022/3/2 3:39 下午
 * @param
 * @return
 */
public class Utils {

    /**
     *
     *   MD5 加密
     * @author ZZW
     * @date 2022/3/2 3:39 下午
     * @param
     * @return
     */
    public static String MD5(String k){
        return DigestUtils.md5DigestAsHex(k.getBytes());
    }



    /**
     *
     *   获取请求IP
     * @author ZZW
     * @date 2022/3/20 9:33 上午
     * @param
     * @return
     */
    public static String getIpAdrress(HttpServletRequest request) {
        String Xip = request.getHeader("X-Real-IP");
        String XFor = request.getHeader("X-Forwarded-For");
        if(StringUtils.isNotEmpty(XFor) && !"unKnown".equalsIgnoreCase(XFor)){
            //多次反向代理后会有多个ip值，第一个ip才是真实ip
            int index = XFor.indexOf(",");
            if(index != -1){
                return XFor.substring(0,index);
            }else{
                return XFor;
            }
        }
        XFor = Xip;
        if(StringUtils.isNotEmpty(XFor) && !"unKnown".equalsIgnoreCase(XFor)){
            return XFor;
        }
        if (StringUtils.isBlank(XFor) || "unknown".equalsIgnoreCase(XFor)) {
            XFor = request.getHeader("Proxy-Client-IP");
        }
        if (StringUtils.isBlank(XFor) || "unknown".equalsIgnoreCase(XFor)) {
            XFor = request.getHeader("WL-Proxy-Client-IP");
        }
        if (StringUtils.isBlank(XFor) || "unknown".equalsIgnoreCase(XFor)) {
            XFor = request.getHeader("HTTP_CLIENT_IP");
        }
        if (StringUtils.isBlank(XFor) || "unknown".equalsIgnoreCase(XFor)) {
            XFor = request.getHeader("HTTP_X_FORWARDED_FOR");
        }
        if (StringUtils.isBlank(XFor) || "unknown".equalsIgnoreCase(XFor)) {
            XFor = request.getRemoteAddr();
        }
        return XFor;
    }

}
